Re: [Xen-devel] how to setup NAT for domU?

[Andrew Theurer <habanero@xxxxxxxxxx>]

Gregor Milos wrote:

> > Gregor, in your xmexample script you have:
> >
> > vif = [ 'ip=192.168.%d.1/24' % (vmid)]
> >    
> The way the default setup (xmexample) works is as follows:
> in domain 0 - vif gets ip = 192.168.vmid.1
> in domU - eth0 gets ip = 192.168.vmid.2
> this way we can easily update the routing tables in dom0. 
> There can be up to 255 unprivileged domains (which is plenty).
>  
OK, that's exactly what I wanted to do.

>  
>
> > I have a much simpler config file, which has:
> >
> > vif = [ 'ip=192.168.2.1/24']
> >    
> This way all the virtual interfaces in dom0 would be getting the same ip, 
> which will not work for more then one domU.
>  
Actually I have a diferent file for each vmid, generated by bash 
scripts, with have a different 192.168.vmid.1, so I think our intent is 
the same, just different implemtations.  My way was driven by my lack of 
python experience :)
>  
>
> > ...which I tried to use but I get an error from xm create.  Looking at
> >    
> What is the error? Does it happen when you are trying to set up the first 
> unprivileged domain or any subsequent ones. What IP address do you give to 
> eth0 in domU?
>  
I don't have the error recordred, but I think it was a python parsing 
error.  Perhaps I just didn't get the format correctly.  I cannot 
reproduce at the moment, because apparantly I have really screwed 
somthing up by trying the unstable tree, and so far I have not been able 
to get 2.0-testing or 2.0.1 running again (and 2.0.3 has always stuck at 
"Scrubbing memory.."). 

I'll try to get back where I started, 2.0.1 with the error reproduced.  
Hopefully it's just an error on my part.  Thanks for your help!
-Andrew Theurer


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